What is difference between ale and lager?

What is difference between ale and lager?
For the average beer drinker, the difference between an ale and a lager comes down to how the beer looks, smells, and tastes. Ales tend to be fruity-estery, while lagers are clean-tasting and frequently described as "crisp." ... Simply put, lagers use an entirely different type of yeast during fermentation.

Reference:
What is the difference between a lager and an ale? | Popular Science
Jan 25, 2013

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